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Título: | Hyperon-Nucleon Interactions from Quantum Chromodynamics and the Composition of Dense Nuclear Matter |
Autor: | Beane, Silas R. Chang, Emmanuel Cohen, S. D. Detmold, William Lin, H. W. Luu, Thomas C. Orginos, Kostas Parreño García, Assumpta Savage, Martin J. Walker-Loud, André NPLQCD Collaboration |
Materia: | Cromodinàmica quàntica Hiperons Nucleòtids Quantum chromodynamics Hyperons Nucleotides |
Fecha de publicación: | 23-oct-2012 |
Publicado por: | American Physical Society |
Resumen: | The low-energy n Σ − interactions determine, in part, the role of the strange quark in dense matter, such as that found in astrophysical environments. The scattering phase shifts for this system are obtained from a numerical evaluation of the QCD path integral using the technique of lattice QCD. Our calculations, performed at a pion mass of m π ∼ 389 MeV in two large lattice volumes and at one lattice spacing, are extrapolated to the physical pion mass using effective field theory. The interactions determined from lattice QCD are consistent with those extracted from hyperon-nucleon experimental data within uncertainties and strengthen model-dependent theoretical arguments that the strange quark is a crucial component of dense nuclear matter. |
Nota: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.109.172001 |
Es parte de: | Physical Review Letters, 2012, vol. 109, num. 17, p. 172001 |
URI: | https://hdl.handle.net/2445/133355 |
Recurso relacionado: | https://doi.org/10.1103/PhysRevLett.109.172001 |
ISSN: | 0031-9007 |
Aparece en las colecciones: | Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) |
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